central coast, nsw, we sail with only weedys, the jp fins dont get much credit but there good, big mike has been around 38kts on the jp 31, the jp 36 grips well with larger sails, i use the jp 26 wave weed alot, grips well up to 7m, and is fast, we are starting to also use the delta fins as well, there going well, we have older fins as well, finworks works well, those german fins go well, deschlessager???, the carbon fins are ok, in my opinion the smaller ones are ok, but the jps work well, i know people do go bigger than jp 36, but in my experience anything bigger just drags too much, initially weed fins feel like crap, but stick with them, if you have to, and they work well, i think in the early days i found them a little more prone to sliding, and turning hard into a gype used to be hard, but its all good now, you just get used to it, from a hobby point of view, a weedy will do everything, i know dudes at illawarra have done around mid forties on them, as decript said, if your light and lift isnt a problem, weedys can help keep it all down, we use weedys on everything from 130l slalom boards down to our 50l speed boards, sails 9m to 4.5m, if your gunna sail thick shallow weed banks, 30 degrees wont be enough rake, 30 degrees is ok for light surface weed, in my experience anything bigger than a jp36, is a waste of time, especially in thick shallow weed banks, but im 73kg, big guys, more back foot pressure, they seem to get good speeds out of the jp36, over 36kts with 8m plus sails on 130, 120l slalom boards, most sailors of all ability dont like weedys initially, but after a while most are happy to sail exclusively with just weedys regardless of if its needed or not,,, good luck all